Welcome to the forum. When asking a question like this, it always helps to post your recipe and techniques.
That said, "light" and "pale," in a homebrewer's mind, aren't exactly Coors Light colored. Honey-colored is a more realistic goal for a light beer.
Also, when you add the extract, if you don't reduce the heat or stir fast enough, it'll get burnt on the bottom of the pot, leading to a darker beer. It will get a little lighter with time, but don't expect to go from dirty motor oil to clean motor oil.